摘要
文章较系统地研究了201×8阴离子交换树脂、HD-8阳离子交换树脂分离富集Cr(Ⅵ)和Cr(Ⅲ)的最佳条件,探讨了洗脱液的选择,减压微型交换柱对铬的富集倍率和富集限,Cr(Ⅵ)和Cr(Ⅲ)的淋洗曲线,有机物存在对Cr(Ⅲ)回收的影响以及共存离子的最大允许量,最后还结合二苯碳酰二肼光度法用水样分别上阴柱和阳柱测定了西湖水和自来水中Cr(Ⅵ)和Cr(Ⅲ)的含量,水样中Cr(Ⅵ)加标回收率在97%～99%。
The paper studied systematically the optimum condition of separation and collection of Cr（Ⅵ） and Cr（Ⅲ） with 201×8 negative ion exchange resion and HD-8 positive ion exchange resion,and discussed the choose of the liquid of drip.It also probed into the enrichment times and enrichment limit of the chromium with miniature exchange columns,the drip washing curves of Cr（Ⅵ） and Cr（Ⅲ）,the influence of organic matters on recovery of Cr（Ⅲ） and the maximum mete of the coexistent ions.At last,the writer applied the ion exchange columns and spectrophotometry to the determination of chromium in the west lake water and running water.The recovery rate of standard addition of Cr（Ⅵ） in water samples is between 97 %～99 %.
出处
《广东化工》
CAS
2010年第11期64-65,共2页
Guangdong Chemical Industry
